化工进展2018，Vol.37Issue(1)：44-52,9.DOI:10.16085/j.issn.1000-6613.2017-0690
不同结构储热水箱分层特性的实验研究
Experimental analysis on stratification characteristics of different structure tanks
摘要
Abstract
In solar energy heat-collecting system,temperature stratification effect of the storage tank is greatly influenced by different tank structures. A test rig of storage tank was established in order to study the stratification characteristics. Experiments of three different structure tanks(direct import, three layers and stratifier)were carried out. The initial water temperature in the tank is 70℃. Under the same inlet water temperature and different quantities of flow rate,the temperature variation curves of each layer in different structure tanks were drawn according to the experimental data. Results showed that with the increase of influent flow rate,the mixing effect in the storage tank is strengthened and the temperature of each layer tends to be consistent with less time. Based on the law of thermodynamics, the indexes of stratification effect such as extraction efficiency,dimensionless exergy and stratification number of these tanks were analyzed. Results also showed that among these different structure tanks, the stratifier has a best stratification effect and effectively inhibits the mixing effect. Besides,three layers tank has a better stratification effect than the direct import ones.关键词
储热水箱/分层效果/取出效率/(拥)/分层数Key words
water storage tank/stratification effect/extraction efficiency/dimensionless exergy/stratification number分类
能源科技引用本文复制引用
黄震,王子龙,张华,黄华杰..不同结构储热水箱分层特性的实验研究[J].化工进展,2018,37(1):44-52,9.基金项目
国家自然科学基金(51606126,51476022)及上海市自然科学基金(15ZR1428800)项目. （51606126,51476022）
